Android仿抖音点击效果

骑猪看日落 2023-10-18 22:31 180阅读 0赞

### **1.概述**  ###

*短视频抖音*App非常火 ，视频点击效果红心效果也不错。其实不难就是一些动画效果的结合使用，这里将具体一步一步实现。使用简单。

老规矩，先看女神**效果图**：

![20190727195544642.gif][]

### **2．效果分析** ###

**2.1：**首先是构建一张红心图片 new ImageView(mContext);

**2.2：**设置红心图片X与Y坐标位置

**2.2：**添加属性动画效果集，包含缩放、透明度、旋转、向上平移（按一定顺序重复）

### **3．代码实现** ###

**3.1、自定义布局，我这里重写RelativeLayout**

**3.2、自定义属性attrs.xml**

<declare-styleable name="HeartLayout">
       <attr name="heart_width" format="integer" />
       <attr name="heart_height" format="integer" />
       <attr name="heart_image_resId" format="reference" />
    </declare-styleable>

//自定义属性 宽、高、图片
    TypedArray typedArray=context.obtainStyledAttributes(attrs,R.styleable.HeartLayout);
            mWidth=typedArray.getInteger(R.styleable.HeartLayout_heart_width,mWidth);
            mHeight=typedArray.getInteger(R.styleable.HeartLayout_heart_height,mHeight);
        image_resId=typedArray.getResourceId(R.styleable.HeartLayout_heart_image_resId,image_resId);

**3.3、创建ImageView,并设置坐标**

**默认图片或者自定义**

ImageView imageView=new ImageView(mContext);
        imageView.setImageResource(image_resId);

因为**图片位置在手指正上方**，所以得到触摸坐标后进行左移动自身宽度一半，向上移动自身高度。

RelativeLayout.LayoutParams layoutParams=new RelativeLayout.LayoutParams(mWidth, mHeight);
            int xLeft=(int)event.getX()- mWidth/2;
            int yTop=(int)event.getY() - mHeight;
            layoutParams.setMargins(xLeft,yTop,0,0);
            imageView.setLayoutParams(layoutParams);

**3.4、动画效果ObjectAnimator**

通过属性动画ObjectAnimator进行缩放、旋转、渐变透明度、平移等操作ImageView心图片。

**3.5、RedHeartLayout自定义布局的整体代码**

/**
     * 仿抖音红心效果
     */
    public class RedHeartLayout extends RelativeLayout {
        private Context mContext;
        private float[] mRandomAngle = {-25, -15, 0, 15, 25};//随机心形图片角度
        private int image_resId=R.drawable.ic_heart;//默认图片
        private int mWidth=120; //默认图片宽
        private int mHeight=120;//默认图片高
    
    
        /**
         * new 使用
         * @param context
         */
        public RedHeartLayout(Context context) {
            super(context);
            initView(context);
        }
        /**
         *  当有style自定义样式时候 使用
         * @param context
         * @param attrs
         * @param defStyleAttr
         */
    
        public RedHeartLayout(Context context, AttributeSet attrs, int defStyleAttr) {
            super(context, attrs, defStyleAttr);
            initView(context);
        }
        /**
         *  布局使用
         * @param context
         * @param attrs
         */
        public RedHeartLayout(Context context, AttributeSet attrs) {
            super(context, attrs);
            //自定义属性 宽、高、图片
            TypedArray typedArray=context.obtainStyledAttributes(attrs,R.styleable.HeartLayout);
            mWidth=typedArray.getInteger(R.styleable.HeartLayout_heart_width,mWidth);
            mHeight=typedArray.getInteger(R.styleable.HeartLayout_heart_height,mHeight);
            image_resId=typedArray.getResourceId(R.styleable.HeartLayout_heart_image_resId,image_resId);
            initView(context);
        }
    
        /**
         *  将宽高dp转化为px
         * @param context
         */
        private void initView(Context context) {
            this.mContext = context;
            this.mHeight=dip2px(mContext,mHeight);
            this.mWidth=dip2px(mContext,mWidth);
        }
    
        /**
         *  触摸事件处理
         * @param event
         * @return
         */
        @Override
        public boolean onTouchEvent(MotionEvent event) {
    
            //第一步,创建心形ImageView
            final ImageView imageView=new ImageView(mContext);
            imageView.setImageResource(image_resId);
            RelativeLayout.LayoutParams layoutParams=new RelativeLayout.LayoutParams(mWidth, mHeight);
            int xLeft=(int)event.getX()- mWidth/2;
            int yTop=(int)event.getY() - mHeight;
            layoutParams.setMargins(xLeft,yTop,0,0);
            imageView.setLayoutParams(layoutParams);
            addView(imageView);
            //第二步,添加动画效果集
            AnimatorSet animatorSet = new AnimatorSet();
                        //缩放动画，X轴2倍缩小至0.9倍
            animatorSet.play(scaleXY(imageView, "scaleX", 2f, 0.9f, 100, 0))
                       //缩放动画 , Y轴2倍缩小至0.9倍
                       .with(scaleXY(imageView, "scaleY", 2f, 0.9f, 100, 0))
                       //旋转动画 , 随机旋转角度
                       .with(rotation(imageView, 0, 0))
                       //透明度动画 , 透明度从0-1
                       .with(alpha(imageView, 0, 1, 100, 0))
                       //缩放动画 , X轴0.9倍缩小至1倍
                       .with(scaleXY(imageView, "scaleX", 0.9f, 1, 50, 150))
                       //缩放动画 , Y轴0.9倍缩小至1倍
                       .with(scaleXY(imageView, "scaleY", 0.9f, 1, 50, 150))
                       //平移动画 , Y轴从0向上移动700单位
                       .with(translationY(imageView, "translationY", 0, -700, 800, 400))
                       //透明度动画 , 透明度从1-0
                       .with(alpha(imageView, 1, 0, 400, 400))
                       //缩放动画 , X轴1倍放大至3倍
                       .with(scaleXY(imageView, "scaleX", 1, 3f, 800, 400))
                       //缩放动画 , Y轴1倍放大至3倍
                       .with(scaleXY(imageView, "scaleY", 1, 3f, 800, 400));
            animatorSet.start();
            //动画移除
            animatorSet.addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    super.onAnimationEnd(animation);
                     removeViewInLayout(imageView);
                }
            });
            return super.onTouchEvent(event);
        }
    
        /**
         *   X轴或Y轴 缩放
         * @param view
         * @param propertyName
         * @param from
         * @param to
         * @param time
         * @param delayTime
         * @return
         */
        public  ObjectAnimator scaleXY(View view, String propertyName, float from, float to, long time, long delayTime) {
            ObjectAnimator _scaleXY=  ObjectAnimator.ofFloat(view,propertyName,from,to);
            设置插值器为 匀速(补充：有加速、先加后减等)
            _scaleXY.setInterpolator(new LinearInterpolator());
            //设置开始前延迟
            _scaleXY.setStartDelay(delayTime);
            //设置动画持续时间
            _scaleXY.setDuration(time);
            _scaleXY.start();
            return _scaleXY;
        }
    
        /**
         *   X轴或Y轴 平移
         * @param view
         * @param from
         * @param to
         * @param time
         * @param delayTime
         * @return
         */
        public  ObjectAnimator translationY(View view,  String propertyName,float from, float to, long time, long delayTime) {
            ObjectAnimator translation = ObjectAnimator.ofFloat(view, propertyName, from, to);
            translation.setInterpolator(new LinearInterpolator());
            translation.setStartDelay(delayTime);
            translation.setDuration(time);
            return translation;
        }
    
        /**
         *   透明化处理
         * @param view
         * @param from
         * @param to
         * @param time
         * @param delayTime
         * @return
         */
        public  ObjectAnimator alpha(View view, float from, float to, long time, long delayTime) {
            ObjectAnimator alpha = ObjectAnimator.ofFloat(view, "alpha", from, to);
            alpha.setInterpolator(new LinearInterpolator());
            alpha.setStartDelay(delayTime);
            alpha.setDuration(time);
            return alpha;
        }
    
        /**
         *  旋转
         * @param view
         * @param time
         * @param delayTime
         * @return
         */
        public ObjectAnimator rotation(View view, long time, long delayTime) {
            //随机旋转角度
            float angle= mRandomAngle[new Random().nextInt(4)];
            ObjectAnimator rotation = ObjectAnimator.ofFloat(view, "rotation", angle);
            rotation.setDuration(time);
            rotation.setStartDelay(delayTime);
            rotation.setInterpolator(new TimeInterpolator() {
                @Override
                public float getInterpolation(float input) {
                    //抖动系数越小幅度越大 0-1
                    return input;
                }
            });
            return rotation;
        }
    
        /**
         * 根据手机的分辨率从 dp 的单位 转成为 px(像素)
         */
        public  int dip2px(Context context, float dpValue) {
            final float scale = context.getResources().getDisplayMetrics().density;
            return (int) (dpValue * scale + 0.5f);
        }
    }

### **4、布局使用** ###

**4.1、使用默认配置（推荐直接使用）**

<com.lzj.douyin.redheart.library.RedHeartLayout
           android:layout_width="match_parent"
           android:layout_height="match_parent"/>

**4.2、自定义宽、高、引入其他图片作为效果**

<com.lzj.douyin.redheart.library.RedHeartLayout
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           app:heart_image_resId="@drawable/ic_heart"
           app:heart_width="120"
           app:heart_height="120" />

### **5、Demo地址*[github][]*** ###

欢迎前往

![2019072719470447.gif][]

[20190727195544642.gif]: https://img-blog.csdnimg.cn/20190727195544642.gif
[github]: https://github.com/lzjin/DouYin
[2019072719470447.gif]: https://img-blog.csdnimg.cn/2019072719470447.gif